Medications that may produce movement disorders are widely used. The resulting disorders are often highly disconcerting for the patient and their relatives, especially when the connection between medication and disorder is not recognized. However, ascribing an adverse drug effect to medication exposure is often difficult, especially when the side effect is rare.  Covering various drugs - including the major classes of medications working primarily on the brain, specifically antipsychotics and antidepressants   this all-encompassing review of medication-induced movement disorders aids early recognition and improved treatment. The problem of what to do when the offending medication cannot be reduced is also reviewed.